Climate change is a major concern for the sustainability of our social and economic development, as well as for the preservation of natural ecosystems and the quality of our environment. The main driver of climate change is the emission of greenhouse gases (GHGs), mainly linked to the use of fossil fuels to supply energy for human activities. Aquaculture is growing and represents an essential resource for human nutrition. Greenhouse gas emissions from aquaculture are linked to direct energy use, feed production and the operation of pond systems. It is therefore legitimate to ask what can be expected in terms of environmental impact from the application of the circular economy to aquaculture. The presentation will cover the main concepts relating to GHG emissions and mitigation in aquaculture and their assessment, the application of the circular economy to aquaculture, and the advantages and potential disadvantages of applying circularity to aquaculture systems, particularly in tropical areas. A discussion will opened on the best practices for aquaculture development and perspectives for research.